Which of the following best explains the law of conservation of mass?
No change in mass is observed whem 2.0g of Mg is heated in vacuum
1.2 g of carbon when burnt in excess of oxygen consumers only 3.2 g of it to form 4.4 g of carbon dioxide
12 g of carbon when heated in limited supply of air produces only 20 g of carbon monoxide
A sample of air on heating does not show any change in mass but volume increases
how